Comment on [deleted]
thallamabond@lemmy.world 1 week agoJust so I’m clear on this, is “raid controller” a physical device? Real servers are like wizard magic to me.
Comment on [deleted]
thallamabond@lemmy.world 1 week agoJust so I’m clear on this, is “raid controller” a physical device? Real servers are like wizard magic to me.
neidu3@sh.itjust.works 1 week ago
They can be. Some motherboards come with one built in. But in most cases it refers to its own PCIe card, such as one of the many models from LSI Megaraid.
The advantage of this is that it can have a small capacitor bank (or a proper battery) to provide emergency power so that if something stupid happens such as motherboard failure, the raid controller will use this power to cleanly write to the disks.